Spotted Water Hemlock

Spotted water hemlock in a forest.

Clusters of tiny white flowers grow atop this poisonous plant. Spotted water hemlock grows two to six feet tall and has compound leaves.

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Smooth Waterhyssop

Close up of smooth waterhyssop flowers and leaves.

Smooth waterhyssop has many branches with bright green leaves that are succulent and thick. Small white flowers can be tinged with blue or pink.

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Mud Plantain

Mud plantain in the water.

Mud plantain’s stems and leaves emerge; leaves are sword or egg shaped and leathery. Flowers have five thin petals and are usually purplish blue.

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Blue Waterleaf

Blue waterleaf flowers and buds.

Blue waterleaf has thick stems that grow up to three feet tall and have spines on them. Bright blue to purple flowers have five petals. Leaves are pointy.

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Blue Flag

Blue flag at water's edge with bridge in background.

Blue flag has long narrow green leaves that arch and show blue or indigo flowers.

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Asian Marshweed

Asian marshweed with one flower starting to bloom.

Asian marshweed has frilly submersed leaves, oval emersed leaves, and small lavender flowers with an upper lip.

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Aquatic Forget Me Not

Aquatic forget me not large cluster with flowers.

Aquatic forget me not has lance shaped leaves and pale blue flowers that have five petals each and a yellow center.

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Pickerelweed

Pickerelweed in group in water with flowers

Pickerelweed has elongated heart shaped leaves with violet blue flowers.

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